Compared with our closest relatives, the common chimpanzee and the bonobo, humans are pretty good at focusing exclusively on one mate at a time.

Just how exclusively, however, is the subject of endless tabloid gossip, culture-war sabre-rattling, and scientific debate. The answer seemed to be that most people are exclusive most...

Australia just experienced the second-warmest summer on record, with 2019 being the hottest year. Summer temperatures soared across the country, causing great economic and human loss. The good news is we can do something about this in our own backyards. We have found trees and vegetation can lower local land...

The problem now and going forward is making sure that sick workers stay home. That means not forcing employees to choose between penury and working while coughing.

That’s the conclusion from an editorial in last week’s New York Times that notes that one in four American private sector workers are not entitled to paid sick leave.

“T...